余振霆網站相關資料
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余振霆網站相關資料
Star Sudoku - Six Large Triangles Make New Challen
Star Sudoku consists of 6 larges triangles. The object is to fill all empty triangles so that each large triangle contains numbers 1 through 9. Every …
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Leafsnap UK
Leafsnap UK is a field guide to UK trees developed by the Natural History Museum, London, working with the United States Leafsnap teams. It uses visua …
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